Tiberiu Lepadatu, Developer in Constanța, Constanța County, Romania
Tiberiu is available for hire
Hire Tiberiu

Tiberiu Lepadatu

Verified Expert  in Engineering

Software Developer

Constanța, Constanța County, Romania
Toptal Member Since
October 29, 2020

Tiberiu is a senior developer specializing in building complex architectures on the back end with elegantly simple code and easy-to-use UXs for the front end. His main stack consists of React, Vue, Node.js, and Flask. He worked as a freelancer for eight years, working all around the globe. He's delivered projects for Precision Drilling, Reserve, Bayern AG, Airbus Defence & Space, Enel, and Topflight Apps. Tiberiu has also founded two startups and is now getting back into freelancing.


React, React Native, Sentry, D3.js, MobX, Visual Studio App Center, REST APIs...
Precision Drilling
React, D3.js, Azure, AmCharts, Visx, PWA, Vite, Webpack 4, Webpack 3...
Amazon Web Services (AWS), gRPC, React Native, Express.js, Web Architecture...




Preferred Environment

Visual Studio Code (VS Code), Docker, Linux, Ruby

The most amazing...

...project I've had was Reserve, scaling from four countries to 25, covering more than 75% of Latin America. I was the release manager and lead developer.

Work Experience

Senior React Native Developer

2021 - 2023
  • Managed the release process for the app, ensuring timely delivery to customers. Implemented automatic deployments for mobile pipelines for our 100,000 members.
  • Adapted the application for the Mexican audience through strategic STP integration, contributing to increased user appeal and engagement.
  • Created reports based on deployment metrics and integrate them into the process to speed up the release process. Coordinated with stakeholders to ensure seamless code pushes.
  • Spearheaded the refactoring initiative, implementing a new design system across the entire application for a cohesive and modern user experience.
  • Implemented blocking notifications in just two weeks to inform users about some breaking changes inside the app.
  • Refactored the whole application to move from JavaScript and use TypeScript instead.
  • Reimplemented the connection to the back end using openAPI instead of generic fetches, thus improving the collaboration between the back-end and front-end workers.
  • Improved the security of the application by implementing SOC2 compliance.
  • Implemented custom secure and persistent state management for the wallet application.
Technologies: React, React Native, Sentry, D3.js, MobX, Visual Studio App Center, REST APIs, REST, HTML5, Full-stack Development, Full-stack, HTML, CSS, TypeScript, MongoDB, Minimum Viable Product (MVP), Architecture, Progressive Web Applications (PWA), Figma, Mobile, OAuth 2, Front-end, Mobile First, CI/CD Pipelines, Mapbox, Firebase Analytics

React Developer

2020 - 2023
Precision Drilling
  • Accelerated the application's build time by an impressive 10x by transitioning from webpack to Vite as the build system while also eliminating create-react-app scripts.
  • Optimized application performance by locally implementing all components, removing antD, and significantly reducing bundle size, leading to faster loading times.
  • Devised and implemented an innovative state management logic within the URL, streamlining data passing through the company and enhancing overall efficiency.
  • Pioneered the development of a robust mechanism for generating reports, empowering data-driven decision-making processes.
Technologies: React, D3.js, Azure, AmCharts, Visx, PWA, Vite, Webpack 4, Webpack 3, Application State Management, Redux, Redux-Saga, REST APIs, REST, HTML5, Full-stack Development, Full-stack, HTML, CSS, TypeScript, MongoDB, Next.js, Minimum Viable Product (MVP), Tailwind CSS, Architecture, Progressive Web Applications (PWA), Figma, iOS, Android, Front-end, Mobile First, CI/CD Pipelines, Mapbox, Turf.js, Firebase Analytics


2019 - 2021
  • Founded a fintech startup with a team of four that offered a SaaS and a business model comprising a B2B and B2C. The B2B part allowed all the banks and the fintech to coexist in a shared space, and the B2C brought customers to this space.
  • Oversaw and created the architecture of the app and thought about how the microservices are going to interact with each other. Transitioned eventually to the front-end part because there was a need at the time.
  • Worked in a hectic environment and built a very exciting product. Showcased it to some strong players in the fintech world, one of which is the director of Banca Transilvania and the one from Banca Feroviara Romana.
  • Built a company with the principal value proposition of putting all the banks and financial institutions on common ground by implementing APIs from the banks that accepted European open banking regulations. This built a free fintech market.
Technologies: Amazon Web Services (AWS), gRPC, React Native, Express.js, Web Architecture, Node.js, React, REST APIs, REST, HTML5, Full-stack Development, Full-stack, HTML, CSS, TypeScript, MongoDB, Flutter, Minimum Viable Product (MVP), Tailwind CSS, Architecture, OAuth 2, Front-end, Mobile First, Firebase Analytics


2020 - 2020
  • Developed a reliable front end with an emphasis on improving the user experience by optimizing the flows that the user has in the application.
  • Solved bugs in the codebase that were directly impacting the clients of the application.
  • Implemented strict checks for TypeScript in the codebase.
Technologies: Global Product Management, gRPC, Java 9, React, React Native, REST APIs, REST, HTML5, Full-stack Development, Full-stack, HTML, CSS, TypeScript, Minimum Viable Product (MVP), OAuth 2, Front-end, Mobile First

Lead Developer

2020 - 2020
Topflight Apps
  • Developed multiple applications in my time there as this company specialized in creating MVPs: an online store app, an app for self-monitoring a COVID-19 infection, and an interface for tracking the prices of cryptocurrencies.
  • Tracked and fixed bugs using Clockify and Clickup as reporting tools. Then, we transitioned to using GitHub for organizing our projects.
  • Oversaw a project team with three other employees tasked with creating HIPAA-compliant applications from the ground up.
Technologies: React Native, React, Node.js, Firebase, gRPC, REST APIs, REST, HTML5, Full-stack Development, Full-stack, HTML, CSS, TypeScript, MongoDB, Flutter, Next.js, Minimum Viable Product (MVP), Webflow, OAuth 2, Front-end, Mobile First

Software Engineer | Partner

2013 - 2019
RedPM Organization
  • Improved airplane simulators and ensured they met FAA standards, including EET upgrading.
  • Developed innovative machine-learning techniques for flight simulators.
  • Built a billing service for ENEL in a project alongside my team. This project is especially amazing during the pandemic when everything moved online.
  • Maintained and upgraded Boeing, CAE, and Airbus airplane simulators.
Technologies: Node.js, gRPC, Kubernetes, Docker, React, React Native, REST APIs, REST, HTML5, Full-stack Development, Full-stack, HTML, CSS, TypeScript, MongoDB, WordPress, Next.js, Minimum Viable Product (MVP), Front-end, Mobile First

P4 Deep Learning Detection of Network Intrusions

I developed a system that detects intrusion on the network using low-power programable switches and machine learning algorithms by leveraging both the detection done by a neural network and also the speed of the Tofino switch.

I am now studying the impact of Markov chains in network anomaly detection.

Zoom Clone

I created this application for a workshop that I have kept for Ivy Hacks, a hackathon for people from Ivy League universities. It is a simple camera (Zoom) clone for a full-stack pancakes (client, server) workshop.

App Features:
• You can connect to a server
• You can video chat with others in a single room
• You can have multiple rooms and let the people connect to them

Signature Forgery Detection Tool

I created a signature analyzing tool using JavaScript and HTML5. It detects forgeries by analyzing the way that your hand moves when you are signing. The scope of this project was to help prevent fraud and falsification of signatures for bank statements.

Presentation Application for the National Botanical Garden

With this app, you can recognize plants with a phone camera, do a guided tour, and see events all within one mobile application with a connection to the Azure cloud platform.

The project was the MVP for the National Botanical Garden in Bucharest, and it continues using the code that I and my team have written for it.

ECMWF IFS Python Bindings

This showcases how a modern, interactive development environment can enhance scientific productivity for ECMWF's Integrated Forecasting System (IFS) by calling individual Fortran routines from a Jupyter notebook.

Tools and Examples for Visualizing HPC Performance Data for the IFS

I created an interactive way of displaying HPC metrics for the IFS using interactive metrics plotting techniques. I also improved both the reporting capabilities of the IFS developer and the efficiency in finding performance bottlenecks by the IFS developers.


Python 3, TypeScript 3, JavaScript, HTML5, HTML, CSS, SCSS, CSS3, TypeScript, Ruby, Java 9, Fortran


Express.js, React Native, Redux, Flutter, Next.js, Tailwind CSS, OAuth 2, Electron, Flask, gRPC


React, Node.js, REST APIs, Turf.js, MobX, D3.js, Redux-Saga


Figma, Firebase Analytics, Webpack 4, Webpack 3, Sentry, Visual Studio App Center


Parallel Programming, REST, Web Architecture, Clean Code


Linux, Firebase, WordPress, Mobile, iOS, Android, Mapbox, Docker, Kubernetes, Amazon Web Services (AWS), Visual Studio Code (VS Code), Azure, Webflow


AmCharts, Full-stack Development, Full-stack, Storybook, Minimum Viable Product (MVP), Architecture, Progressive Web Applications (PWA), Front-end, Mobile First, CI/CD Pipelines, IT Security, German, AI Programming, Distributed Software, Distributed Systems, P4, Global Product Management, Visx, PWA, Vite, Application State Management



2020 - 2022

Master's Degree in Computer Science

University Polytechnic of Bucharest - Bucharest Romania

2016 - 2020

Bachelor's Degree in Computer Science Engineering

University Politehnica of Bucharest - Bucharest Romania


Linux Professional Institute Certification

Linux Professional Institute


Deutsche Sprach Diplom


Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.


Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring